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Oregon, the North Division Champions, defeated Arizona, the South Division Champions, 51–13 to claim their second conference title and the chance to play in the College Football Playoff (CFP) semifinal game at the Rose Bowl, where they defeated Florida State 59–20, advancing to their second-ever national championship game (the first-ever CFP National Championship Game), where they were defeated by the Ohio Buckeyes, 42–20.

A record nine conference teams played in a post-season bowl game, with six winning. Arizona, the South Division Champion, was also a bowl game loser, losing to Boise State 38–30 in the Fiesta Bowl. Bowl game winners were: Arizona State defeated Duke 36-31 in the Sun Bowl, Stanford defeated Maryland 45–21 in the Foster Farms Bowl, UCLA defeated Kansas State 40-35 in the Alamo Bowl, USC defeated Nebraska 45–42 in the Holiday Bowl, and Utah defeated Colorado State 45–10 in the Las Vegas Bowl.

Predicted Pac-12 Championship Game Winner: USC (21) was picked to win the Pac-12 Championship over Oregon (17) for the first time since 2012. Others receiving votes were ASU (3), UCLA (2), and Stanford (1).

The championship game was played on December 5, 2015. It featured the teams with the best conference records from each division, Stanford from the North and USC from the South. This was the fifth championship game (and the fifth win for the North), with Stanford appearing for the third time (and winning for the third time) and USC appearing for the first time.